Question

Find the constant difference for a hyperbola with foci at F1 (0, -10) and F2 (0, 10) and the point on the hyperbola (6, 7.5)

Answer 1

So I plugged in the numbers for the formula |√x1-x3)^2+(y1-y3)^2 -√(x2-x3)^2+(y2-y3)^2|

Answer 2

Which would be:
|√0-6)^2+(-10-7.5)^2 -√((0-6)^2+(10-7.5)^2